Performance and Stability of Soft Magnetic Elements for Electronic Article Surveillance

Author

Brauer, Stephan F. ; Roseman, Morton ; Brüning, Ralf

Volume

43

Issue

5

fYear

2007

fDate

5/1/2007 12:00:00 AM

Firstpage

1875

Lastpage

1879

Abstract

A simple figure of merit is proposed to compare the performance of soft magnetic elements for electronic article surveillance (EAS) applications. Annealing experiments were carried out to quantify the evolution of soft magnetic properties of amorphous-metal and Permalloy ribbons used in the library EAS industry. By fitting the kinetics of coercivity change to a simple model based on a uniformly distributed range of activation energies, the room-temperature kinetics of the amorphous elements is predicted

Keywords

Permalloy; amorphous magnetic materials; annealing; coercive force; electronic equipment manufacture; soft magnetic materials; surveillance; 293 to 298 K; NiFe; activation energy; amorphous metal ribbons; annealing; coercivity; electronic article surveillance; figure of merit; library EAS industry; permalloy ribbons; room temperature kinetics; soft magnetic materials; Amorphous magnetic materials; Annealing; Coercive force; Fitting; Kinetic theory; Libraries; Magnetic properties; Soft magnetic materials; Stability; Surveillance; Amorphous magnetic materials; Permalloy; annealing; soft magnetic materials; surveillance;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.892656

Filename

4156269